	var Sys = {};
	var ua = navigator.userAgent.toLowerCase();
	if (window.ActiveXObject){
		Sys.ie = ua.match(/msie ([\d.]+)/)[1];
		}
	else if (document.getBoxObjectFor){
		Sys.firefox = ua.match(/firefox\/([\d.]+)/)[1];
		}
	else if (window.MessageEvent && !document.getBoxObjectFor){
		Sys.chrome = ua.match(/chrome\/([\d.]+)/)[1];
		}
	else if (window.opera){
		Sys.opera = ua.match(/opera.([\d.]+)/)[1];
		}
	else if (window.openDatabase){
		Sys.safari = ua.match(/version\/([\d.]+)/)[1];
	}
	 var a = parseInt(Sys.ie);
	if(a<=8){
		$('#warnning').css('display','block');
	}
	$('#warnning span').click(function(){
		$('#warnning').hide();
	});

